A kind of opening device and opening method for reinforcing double-angle steel rods of trusses

Abstract

The invention discloses a reinforcing hole opening device for a truss double angle rod piece and a hole opening method thereof. The device comprises reinforcing angle iron fixed to original first angle iron and second angle iron of a truss through a high-strength bolt, wherein structural adhesive layers are arranged between the reinforcing angle iron and the original first angle iron and second angle iron; the model of the reinforcing angle iron is the same as that of an original rod piece of the truss, the length of the reinforcing angle iron is calculated according to the shear resistance of the structural adhesive layers, and the hole opening size is determined according to the size of a steel strand which is to penetrate through the rod piece. By calculating the length of the reinforcing angle iron and checking the strength of the reinforcing angle iron, conducting bonding with structural adhesive and then conducting drilling for hole opening, the hole opening method allowing the steel strand to penetrate through the double angle rod piece is realized without affecting production; furthermore, heat generated during structural adhesive bonding, magnetic drilling and plasma cutter punching is small, a heat affected zone is small, and steel bearing capacity is not affected; therefore, the method is universal, using is easy, safe and convenient, normal production and use are not affected, and comprehensive benefits are increased greatly.

Description

technical field [0001] The invention belongs to the field of construction engineering, and in particular relates to a double-angle steel member reinforcing hole opening device and a hole opening method used in a truss structure. Background technique [0002] After decades of development in our country, the existing buildings have approached or exceeded the design service life, and structural safety problems have become increasingly prominent, especially for industrial buildings. Due to the harsh environment, more corrosive media, and poor maintenance and protection, many steel The structural trusses are corroded on the rods and nodes, and the bearing capacity is reduced, which brings serious safety hazards to normal production. [0003] At present, the more commonly used method is to directly weld and reinforce the damaged rods. Since the temperature of the rods increases during the reinforcement process and the bearing capacity decreases, it usually needs to be unloaded, wh...

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Problems solved by technology

[0002] After decades of development in our country, the existing buildings have approached or exceeded the design service life, and structural safety problems have become increasingly prominent, especially for industrial buildings. Due to the harsh environment, more corrosive media, and poor maintenance and protection, many steel The structural trusses are corroded on the rods and nodes, and the bearing capacity is reduced, which brings serious safety hazards to normal production

[0003] At present, the more commonly used method is to directly weld and reinforce the damaged rods. Since the temperature of the rods increases during the reinforcement process and the bearing capacity decreases, it usually needs to be unloaded, which has a long cycle and affects normal production. There are still serious problems. Security risks

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